Open side multiple roll calender



Dec. 10, 1957 B. D. STEWART OPEN SIDE MULTIPLE ROLL CALENDEE 3Sheets-SheeiI l Filed Nov. 30, 1955 INVENTOR. a//cf' 575.44496;- BY l!B. D. STEWART OPEN SIDE MULTIPLE ROLL CALENDER Dec. 10, 1957 5Sheets-Sheet 2 Filed Nov. 30, 1955 Dec. 10, 1957 B. D. STEWART OPEN SIDEMULTIPLE ROLL CLENDERv 3 Sheets-Sheet 3 Filed Nov. 30, 1955 mw E m. mm

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arr@ Ms United States Patent Q OPEN SIDE MULTIPLE ROLL CALENDER Bruce D.Stewart, Denville, N. J., assignor to McKiernan- Terry Corporation,Harrison, N. J., a corporation of New Jersey Application November 30,1955, Serial No. 550,150

3 Claims. (Cl. 18-2) The invention herein disclosed relates to calendersfor operating on web materials.

Objects of the invention are to provide a calender of open sideconstruction enabling ready removal,l replacement and changing -of therolls and with variable drive and pressure means enabling use of themachine for such `different operations as rolling, friction, schreinerand embossing.

Other important objects of the invention are to provide such a machinein a rugged, economical and thoroughly practical form lof construction.

The foregoing and other desirable objects are attained by arranging therolls, usually three, four or five, in a vertical stack in an open sideframe with an intermediate, driven roll in fixed bearings and upper andlower rolls journaled in pivoted levers connected by pressure applyingpower cylinders, means being afforded for driving other of the rolls,when required, from the power driven roll irrespective of the pivotalmounting of such rolls, and means being provided for holding certain ofthe rolls separated when not in service.

Other novel features of the invention and desirable results attained areset forth and will appear in the course of the following specification.

v The drawings accompanying and forming part of the specificationillustrate present commercial embodiments `of the invention, butstructure may be modified and changed as regards such illustration, allwithin lthe true intent and scope of the invention as hereinafterdefined and claimed.

Fig. 1 in the drawings is an end view of a four-roll machine showing allrolls engaged for rolling operations;

Fig. 2 is -a similar view showing gearing applied from the intermediatepower driven roll for driving the top roll for friction service;

Fig. 3 is a like view showing the top and second rolls lifted andsecured in that relation, leaving the intermediate and lower rolls inservice for schreinering;

Fig. 4 is an end view showing the top and second rolls lifted and gearsapplied for driving the lower roll from the intermediate power drivenroll for embossing operations;

Fig. 5 is a front perspective view of the four-roll machine set up forfriction but differing from Fig. 2 by showing the motor drive at one endof the intermediate roll and the chain drive running from the oppositeend of that roll to the top roll;

Fig. 6 is an end view of a five-roll machine with all rolls engaged asfor rolling and pressing operations.

In the several views an open side frame is illustrated having uprightpedestals 7 at the front of which the rolls are mounted in fullyaccessible relation where they may be readily removed, replaced and bechanged as needed to accomplish the different operations for which themachine is intended.

The intermediate or center roll 8 is mounted in xed bearings 9 and therolls above and below the same are Patented Dec. 10, 1957 mounted inarms or levers pivoted to carry such rolls toward or away from theintermediate roll.

The intermediate roll is power driven, Fig. 5 showing this as effectedby way of chain drive 10 to one end of the roll from motor 11.

The top roll 12 and second roll 13 are shown journaled in lever arms 14,15 pivoted in the front of the frame at 1o, 17, respectively.

The bottom roll 18, Figs. 1 to 5, is shown journaled in the ends oflever arms 19 pivoted in the frame on centers 20.

Power cylinders 21 pivotally linked to the extended ends of levers14'and 19 at 22 and 23, provide the means for separating or applyingpressure to the rolls, said cylinders containing pistons havingextending piston rods 24 forming part of the necessary linkage.

The top roll 12 has -a lift connection with the second roll 13, the samebeing shown as adjustable links 25 pivoted at 26 to the forwardlyextended ends of the upper roll carrying arms 14 and pivoted at theirlower ends with lost motion at 27 to pins 28 on forwardly extendedportions of the roll carrying arms 15. The slots 27 providing the 10stmotion are arranged as shown in Figs. 1 and 2, to permit the top roll 12to press downward on the second roll 13 while the latter is engaged withthe intermediate driven roll 8 and, as shown in Figs. 3 and 4,

z to permit the top roll first to lift clear of the second roll and thento pick up the second roll and lift that clear of the intermediate roll.

Means for supporting the top roll clear of the second roll or forsupporting both top and second rolls clear of the intermediate roll, isprovided in the illustration in the form of links 29 pivotally suspendedat 30 from the top levers 14 and carrying at their lower ends dogs orcatches 31 pivoted at 32 so that they may be swung from an inactiveposition, Figs. 1 and 2, into projected position, Figs. 3 and 4, wherethey will engage the teeth of racks 33 fixed on the frame.

The holding dogs 31 in retracted position are clear of the racks 33,permitting free up and down operation of levers 14 and hence free actionof the power cylinders for lifting or lowering the rolls. These dogs,however, when swung into the projecting position shown in Figs. 3 and 4,will engage racks 33 when lifting power is applied by the cylinders,thus to automatically catch and hold the rolls in uplifted relation, asshown in Figs. 3 and 4.

For ordinary rolling and other such pressing operations theintermediate, `8, may be the only driven roll, leaving upper and lowerrolls contact driven as indicated in Fig. 1, pressure such as necessarybeing applied by power cylinders 21.

For frictioning and `such operations power may be taken off from thedriven roll to positively drive the top roll, this being accomplishedregardless of adjusted position of the top roll, by chain drive gearingas shown in Figs. 2 and 5, with one chain 34 running from sprocket 35 onone end of the intermediate roll shaft to an idler sprocket 36 turningon the pivot center 16 of the upper roll carrying lever 14, the lattersprocket carrying a companion sprocket 37 operating chain 38 running toa sprocket 39 on `the end of the upper roll shaft 40.

With such construction the upper roll will be operated from the powerdriven roll regardless of adjustments of the upper and second rolls 12,13, and with pressure either on or off.

For4 schreinering and embossing the upper rolls may be lifted andsecured .in raised position, as shownin Figs. 3 and 4.

For embossing and possibly other such operations the lower roll isgeared in meshed relation to the intermediate power roll as by thegearing illustrated in Fig. 4, and comprising gears 41, 42 on the endsAof the intermediate and lower roll shafts connected by idler gears 43,44, with the latter journaled on the pivot center 20 of the lower rollcarrying arms 19 so as to maintain continuous uniform drive of the lowerroll regardless of pressure adjustments.

The basic combination disclosed enables the machine to be quicklyadapted to various calendering services. The rolls,jsteel, engraved,filled and possibly other types, are exposed and accessible at the openface of the frame so as to be readily removable and inter-changeable andso as to enable easy threading of the material. The

. mounting of upper and lower rolls in pivoted lever arms under pressurecontrol makes them more or less selfequalizing for establishing properengagement and pressure relation, and these rolls may be mounted inselfaligning bearings so as to compensate for possible misalignment.

Figs. 1 to 5 show the invention operative as a two, three or four-rollmachine.

Fig. 6 shows how the invention may be extended into a five-roll machineby extending the frame vertically to accommodate an additional roll 45between the power driven roll 8 and lower, lever carried roll 18, thisadded, interposed roll being carried by journal bearing arms 46 pivotedin the front of the frame at 47.

In this construction the interposed roll 45 rides the lower roll 18 andis lifted by the latter into pressure engagement with the power driven,intermediate fixed bearing roll 8. This interposed roll 45 follows theaction of the lower roll 18, being relieved from pressure engagementwith the intermediate power driven roll when the bottom roll is lowered.

The cylinders 21 may be operated by hydraulic or pneumatic power andcontrols suitable for such operation will be provided.

The pawl and ratchet mechanism 31, 33 for catching and holding themovable rolls in pressure released position may be of suitable extent totake care of the different size rolls which may be used in the machine.

The ready adaptability enables the machine to be used on different webmaterials such as textiles, plastics, papers, leather, imitationleather, rubber, etc., and enables one machine to perform servicesheretofore requiring the use of several special machines.

The simple construction disclosed enables the machine to be produced atreasonably low cost.

What is claimed is:

1. Open side multiple roll calender, comprising an open front frame, anintermediate roll journalled in fixed bearings in said frame, leverspivoted in the frame above and below said intermediate roll, upper andlower rolls journalled in said levers in cooperative relation to saidintermediate roll, power means connecting said levers for applyingpressure of the upper and lower rolls on the intermediate roll and forrelieving the intermediate roll of such pressure, power means fordriving the intermediate roll, means for suporting the upper and lowerrolls released from pressure relation with the intermediate powerdriving roll, a second roll mounted on pivoted lever arms between thetop lever carried roll and the intermediate power driven roll and lostmotion connection lifting links between the top roll carrying levers andthe lever arms carrying said second roll.

2. Open side multiple roll calender, comprising an upright frame,horizontal rolls in vertically superposed aligned relation exposed atone side of said frame and including an intermediate roll in fixed framebearings and upper and lower rolls movably `supported above and belowsaid intermediate roll, horizontal levers fulcrumed intermediate theirends on said frame above and below said intermediate roll and projectingto opposite sides of said frame, said upper and lower rolls beingjournalled in the free ends of the levers at said one side of the frame,power means connected with the free ends of the levers at the oppositeside of the frame for rocking said levers on their intermediate fulcrumsfor applying pressure of the upper and lower rolls to said intermediateroll and for relieving the intermediate roll of said pressure, means fordriving the intermediate roll in its fixed bearings, drive connectionsextending between fixed centers from said intermediate roll to thefulcrum center of the levers carrying one of said movable rolls andbetween iixed centers from said fulcrum center to the roll journalled onsaid levers, whereby said movable roll will be driven the same in itsvarious positions of adjustment and readily releasable means apart fromsaid power means for securing the levers carrying said movable drivenroll in position released from pressure relation with said intermediateroll, a second roll mounted on lever arms pivoted on the frame andinterposed between the upper lever carried roll and the intermediatepower driven roll and lost motion connection lifting links 4between theupper roll carrying levers and the lever arms carrying said second roll.

3. Open side multiple roll calender, comprising an upright frame,horizontal rolls in vertically superposed aligned relation exposed atone side of said frame and including an intermediate roll in fixed framebearings and upper and lower rolls movably supported above and belowsaid intermediate roll, horizontal levers fulcrumed intermediate theirends on said frame above and below said intermediate roll and projectingto opposite sides of said frame, said upper and lower rolls beingjournalled in the free ends of the levers at said one side of the frame,power means connected with the free ends of the levers at the oppositeside of the frame for rocking said levers on their intermediate fulcrumsfor applying pressure of the upper 4and lower rolls to said intermediateroll and for relieving the intermediate roll of said pressure, means fordriving the intermediate roll in its fixed bearings, drive connectionsextending between fixed centers from said intermediate roll to thefulcrum center of the levers carrying one of said movable rolls andbetween fixed centers from said fulcrum center to the roll journalled onsaid levers, whereby said movable roll will be driven the same in itsvarious positions of adjustment and readily releasable means apart fromsaid power means for securing the levers carrying said movable drivenroll in position released from pressure relation with said intermediateroll and additional rolls mounted on lever arms pivoted on the frame andinterposed between the upper roll and intermediate roll and between saidlower roll and the intermediate roll respectively and lost motion linkconnections between certain of said roll carrying levers and pivotedlever arms.

References Cited in the file of this patent UNITED STATES PATENTS174,047 Wilson Feb. 22, 1876 727,229 Turner May 5, 1903 748,593 Eck Jan.5, 1904 2,300,522 Redshaw Nov. 3, 1942 2,495,990 Sockell Jan. 3l, 19502,571,239 Hart Oct. 16, 1951 2,686,413 Roublotf et al. Aug. 17, 1954FOREIGN PATENTS 291 Germany July 24, 1877 843,687 Germany July l0, 19,52

